China National Standards

China Symbols identifiers engineering Industry Standards English PDF List

  •  China "Symbols identifiers engineering" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    HG/T 20637.2-1998 Symbols and identifiers for engineering design of instrumentation
    自控专业工程设计用图形符号和文字代号    		 China Chemical Industry Standards
    Symbols identifiers engineering
    English PDF

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